Projection lamp for projecting a nebula and a starry sky

ABSTRACT

The present disclosure discloses a projection lamp for projecting a nebula and a starry sky comprising a housing, a light source assembly, a laser assembly, a rotating assembly, a control board, a base seat, and a power source port. The light source assembly and the laser assembly are disposed in the housing and penetrate through the housing, and the rotating assembly and the control board are disposed in the housing. The rotating assembly is configured to drive a rotating optical sheet and a diffraction sheet to rotate. The light source assembly comprises a light source board, a light reflecting cup, a fixed optical sheet, the rotating optical sheet, and a lens assembly. The light source board, the light reflecting cup, the fixed optical sheet, the rotating optical sheet, and the lens assembly are successively disposed along a path in which light rays emitted by the light source board move.

RELATED APPLICATIONS

This application claims priority to Chinese patent application number202121184135.X, filed on May 28, 2021. Chinese patent application number202121184135.X is incorporated herein by reference.

FIELD OF THE DISCLOSURE

The present disclosure relates to a field of projection lamps, and inparticular to a starry sky projection lamp.

BACKGROUND OF THE DISCLOSURE

At present, projection devices have long been constrained in form andthe function of projection devices is relatively simple. With thedevelopment of society, people have higher and higher requirements forart and the beautification of the surrounding living environment.However, due to the fast pace of life and full schedule of modernpeople, people do not have much time to enjoy the beautiful starry skyof nature in the wild. Due to factors such as weather and livingenvironment, people have fewer opportunities to watch the starry sky, oreven the galaxy in the starry sky, and it is not convenient. In order tomeet people's requirements, some projection lamps for projecting astarry sky have also appeared on the market. Projection technology isused to project the cosmic starry sky and other patterns on the roof orwall of the home, and the bright starry sky can be seen through theprojection projected by projection lamps.

The existing projection lamps have the following shortcomings:

1. The existing projection lamps project stationary starry sky images,which cannot simulate the movement of actual stars and nebula.

2. The existing projection method of the projection lamps is to realizethe projection pattern by hollowing out the lampshade, and it isimpossible to simulate the real nebula.

3. A projection direction of the existing projection lamps cannot beadjusted.

BRIEF SUMMARY OF THE DISCLOSURE

The present disclosure provides a projection lamp for projecting anebula and a starry sky, and the projection lamp has two independentfunctions of projecting the nebula and the starry sky.

In order to solve the technical problem, a first technical solution ofthe present disclosure is as follows.

A projection lamp for projecting a nebula and a starry sky comprises ahousing, a light source assembly, a laser assembly, a rotating assembly,a control board, a base seat, and a power source port. The light sourceassembly and the laser assembly are disposed in the housing andpenetrate through the housing, and the rotating assembly and the controlboard are disposed in the housing. The rotating assembly is configuredto drive a rotating optical sheet of the light source assembly and adiffraction sheet to rotate, and the base seat is fixedly disposed inthe housing. The power source port is disposed on the control board andpenetrates through the housing, and the light source assembly comprisesa light source board, a light reflecting cup, a fixed optical sheet, therotating optical sheet, and a lens assembly. The light source board isfixedly disposed in the housing, and the light source board, the lightreflecting cup, the fixed optical sheet, the rotating optical sheet, andthe lens assembly are successively disposed along a path in which lightrays emitted by the light source board move. The fixed optical sheet isfixedly disposed on the base seat, the rotating optical sheet isrotatably connected to the rotating assembly, and the lens assembly isfixedly disposed on the housing. The light reflecting cup is configuredto reduce a lighting angle of the light rays emitted by the light sourceboard so as to enable the light rays emitted by the light source boardto be projected onto the fixed optical sheet. The fixed optical sheetand the rotating optical sheet are configured to successively scatterthe light rays emitted by the light source board so as to enable thelight rays scattered by the rotating optical sheet to be projected ontoa projection plane to form a projection of the nebula through the lensassembly. The rotating assembly is configured to drive the rotatingoptical sheet to rotate so as to make the projection of the nebula flow.

In a preferred embodiment, the housing comprises an upper housing and alower housing, and the upper housing and the lower housing are connectedto each other to define a chamber.

In a preferred embodiment, the fixed optical sheet and the rotatingoptical sheet are frosted glass.

In a preferred embodiment, the laser assembly comprises a laser emitterand a heat sink, and the laser emitter is disposed in a through channelof the heat sink.

In a preferred embodiment, the rotating assembly comprises a motor, atransmission gear, a light source rotating gear, and a laser rotatinggear, and the motor is fixedly disposed in the housing and comprises anoutput shaft operatively coupled to the transmission gear. Thetransmission gear is operatively coupled to each of the light sourcerotating gear and the laser rotating gear, and the rotating opticalsheet is operatively coupled to the light source rotating gear. Thelaser rotating gear comprises a hollow protruding column extendingoutward along an axis of the laser rotating gear, and the diffractionsheet is disposed on a distal end of the hollow protruding column. Alaser beam emitted by the laser emitter is configured to pass throughthe hollow protruding column and the diffraction sheet so as to form amoving projection of stars.

In a preferred embodiment, the base seat comprises two supportingcolumns for supporting the hollow protruding column, and each of the twosupporting columns comprises an arc groove matched with an outer wall ofthe hollow protruding column.

In a preferred embodiment, the control board comprises a wirelesscommunication module configured to be connected to a remote controller.

In a preferred embodiment, the lens assembly is fastened between theupper housing and the lower housing.

In a preferred embodiment, the lens assembly comprises a lens lower lid,a lens upper lid, a plastic sheet, and a lens. The lens is fixedlydisposed between the lens lower lid and the lens upper lid, and theplastic sheet is fixedly disposed on the lens upper lid in a hot meltmanner.

In a preferred embodiment, the base seat comprises a plurality of slotsfor fixing the light source board and the fixed optical sheet.

Compared with the existing techniques, the technical solution has thefollowing advantages.

1. The projection lamp in the present disclosure comprises the motor,and the motor drives the light source rotating gear and the laserrotating gear to rotate to enable the rotating optical sheet and thediffraction sheet to rotate in the housing so as to actually simulaterotating images of the nebula and the starry sky.

2. The projection lamp in the present disclosure comprises the laserassembly, and the laser assembly cooperates with the diffraction sheetto form the projection of stars. The light rays emitted by the lightsource board successively pass through the fixed optical sheet, therotating optical sheet, and the lens assembly to be projected to formthe projection of the nebula, so that the projection of the nebula has astronger sense of reality. The projection of the nebula is better than aprojection projected by a lamp with a piercing lampshade, and theprojection of the nebula can move periodically, so that the projectionof the nebula is more similar to a real nebula.

3. The projection lamp in the present disclosure has a smaller size, andwhen the projection lamp is placed on a desk or other supporting object,a projection direction of the projection lamp is easy to adjust, whichhas fewer limitations.

4. The projection lamp in the present disclosure can be remotelycontrolled by a remote controller, and the remote controller canseparately control turning ON and OFF of the light source board and thelaser emitter so as to project at least one of the projection of starsor the projection of the nebula.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a perspective view of a projection lamp of apreferred embodiment in the present disclosure.

FIG. 2 illustrates a perspective view of the projection lamp with anupper housing removed of a preferred embodiment in the presentdisclosure.

FIG. 3 illustrates an exploded view of the projection lamp of apreferred embodiment in the present disclosure.

FIG. 4 illustrates a perspective view of a lens assembly of a preferredembodiment in the present disclosure.

FIG. 5 illustrates a perspective view of a light source assembly of apreferred embodiment in the present disclosure.

FIG. 6 illustrates a perspective view of a laser assembly of a preferredembodiment in the present disclosure.

FIG. 7 illustrates a perspective view of a rotating assembly of apreferred embodiment in the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present disclosure will be further described below in combinationwith the accompanying drawings and embodiments.

The following will clearly and completely describe the technicalsolutions in the embodiments of the present disclosure with reference tothe accompanying drawings. Obviously, the described embodiments are onlya portion of the embodiments of the present disclosure, and not all ofthe embodiments. Based on the embodiments of the present disclosure, allother embodiments obtained by those of ordinary skill in the art withoutcreative work fall within the protection scope of the presentdisclosure.

In the description of the present disclosure, it should be noted thatthe terms “upper”, “lower”, “inner”, “outer”, “top/bottom”, etc.indicate the orientation or positional relationship based on theorientation shown in the drawings. The positional relationship is onlyfor the convenience of describing the present disclosure and simplifyingthe description, rather than indicating or implying that the referenceddevice or element must have a specific orientation, be constructed, andbe operated in a specific orientation. Therefore, the positionalrelationship should not be understood as a limitation of the presentdisclosure. In addition, the terms “first” and “second” are only usedfor descriptive purposes and should not be understood as indicating orimplying relative importance.

In the description of the present disclosure, it should be noted thatthe terms “installed”, “provided with”, “sleeved/connected”,“connected”, etc., should be understood broadly. For example,“connected” can be a fixed connection, a detachable connection, or anintegral connection, a mechanical connection, an electrical connection,a direct connection, or an indirect connection through an intermediatemedium, and it can be a connection between two members. For those ofordinary skill in the art, the specific meaning of the above terms inthe present disclosure can be understood under specific conditions.

Referring to FIGS. 1-7 , a projection lamp for projecting a nebula and astarry sky in the present disclosure is provided and comprises a housing11, a light source assembly 12, a laser assembly 13, a rotating assembly14, a control board 15, a base seat 16, and a power source port 17.

The light source assembly 12 and the laser assembly 13 are disposed inthe housing 11 and penetrate through the housing 11. The rotatingassembly 14 and the control board 15 are disposed in the housing 11, andthe rotating assembly 14 is configured to drive a rotating optical sheet123 of the light source assembly 12 and a diffraction sheet 133 torotate. The base seat 16 is fixedly disposed in the housing 11, and thelight source assembly 12, the laser assembly 13, the rotating assembly14, and the control board 15 are fixedly disposed on the base seat 16.The power source port 17 is disposed on the control board 15 andpenetrates through the housing 11, and the power source port 17 iselectrically connected to an external power source for supplyingelectric energy to the light source assembly 12, the laser assembly 13,the rotating assembly 14, and the control board 15.

The housing 11 comprises an upper housing 111 and a lower housing 112,and the upper housing 111 and the lower housing 112 are connected toeach other to define a chamber in which the light source assembly 12,the laser assembly 13, the rotating assembly 14, and the control board15 are disposed. The housing 11 further comprises a plurality of throughholes 119 through which the light source assembly 12, the laser assembly13, and the power source port 17 pass.

In this embodiment, the light source assembly 12 comprises a lightsource board 121, a light reflecting cup 125, a fixed optical sheet 122,the rotating optical sheet 123, and a lens assembly 124. The lightsource board 121 is fixedly disposed in the housing 11. The lightreflecting cup 125 and the fixed optical sheet 122 are disposed in frontof the light source board 121 and are fixedly disposed on the base seat16. The rotating optical sheet 123 is disposed in front of the fixedoptical sheet 122 and rotates with the rotating assembly 14. The lensassembly 124 is disposed in front of the rotating optical sheet 123 andis disposed on the housing 11. Light rays emitted by the light sourceboard 121 successively pass through the fixed optical sheet 122, therotating optical sheet 123, and the lens assembly 124 to be projected toform a projection of a nebula.

The lens assembly 124 comprises a lens lower lid 1241, a lens upper lid1242, a plastic sheet 1243, and a lens 1244. The lens 1244 is fixedlydisposed between the lens lower lid 1241 and the lens upper lid 1242.The plastic sheet 1243 is fixedly disposed on the lens upper lid 1242 ina hot melt manner.

The light source board 121 comprises a light emitting diode (LED) chip.The fixed optical sheet 122 and the rotating optical sheet 123 arefrosted glass with rough surfaces. The light rays emitted by the lightsource board 121 are focused onto the fixed optical sheet 122 throughthe light reflecting cup 125 and successively pass through the fixedoptical sheet 122 and the rotating optical sheet 123 to be scatteredtwice onto a projection plane to form the projection of the nebula. Atthe same time, the projection of the nebula rotates due to the rotatingoptical sheet 123 rotating with the rotating assembly 14.

In this embodiment, the laser assembly 13 comprises a laser emitter 131and a heat sink 132, and the laser emitter 131 is disposed in a throughchannel 1321 of the heat sink 132. The diffraction sheet 133 is disposedin front of the laser emitter 131, and the diffraction sheet 133 isfixedly disposed on the rotating assembly 14 to rotate with the rotatingassembly 14. A laser emitted by the laser emitter 131 passes through thediffraction sheet 133 to be projected to form a projection of stars, andthe projection of stars rotates due to the diffraction sheet 133rotating with rotating assembly 14.

Referring to FIGS. 3-4 , in this embodiment, the rotating assembly 14comprises a motor 141, a transmission gear 142, a light source rotatinggear 144, and a laser rotating gear 143. The motor 141 is fixedlydisposed in the housing 11, and the motor 141 comprises an output shaftoperatively coupled to the transmission gear 142. The transmission gear142 is operatively coupled to each of the light source rotating gear 144and the laser rotating gear 143. The rotating optical sheet 123 isoperatively coupled to the light source rotating gear 144 to enable therotating optical sheet 123 to rotate with the light source rotating gear144. The laser rotating gear 143 comprises a hollow protruding column1431 extending outward along an axis of the laser rotating gear 143, andthe diffraction sheet 133 is disposed on a distal end of the hollowprotruding column 1431 so as to enable the diffraction sheet 133 torotate with the hollow protruding column 1431.

The control board 15 is electrically connected to each of the lightsource assembly 12, the laser assembly 13, the rotating assembly 14, andthe power source port 17, and the technologies adopted are all existingtechnologies, and will not be repeated here. At the same time, thecontrol board 15 comprises a wireless communication module configured tobe connected to a remote controller. In this embodiment, the wirelesscommunication module is an infrared remote control module.

In this embodiment, the base seat 16 comprises a plurality of slots 161for fixing the light source board 121 and the fixed optical sheet 123.The base seat 16 comprises two supporting columns 162 for supporting thehollow protruding column 1431, and each of the two supporting columns162 comprises an arc groove 163 matched with an outer wall of the hollowprotruding column 1431.

The projection lamp in the present disclosure comprises the motor 141,and the motor 141 drives the light source rotating gear 144 and thelaser rotating gear 143 to rotate to enable the rotating optical sheet123 and the diffraction sheet 133 to rotate in the housing 11 so as toactually simulate rotating images of the nebula and the starry sky. Thelaser assembly cooperates with the diffraction sheet 133 to form theprojection of stars, and the light rays emitted by the light sourceboard 121 successively pass through the fixed optical sheet 122, therotating optical sheet 123, and the lens assembly 124 to be projected toform the projection of the nebula, so that the projection of the nebulahas a stronger sense of reality. The projection of the nebula is betterthan a projection projected by a lamp with a piercing lampshade, and theprojection of the nebula can move periodically, so that the projectionof the nebula is more similar to a real nebula. The projection lamp hasa smaller size, and when the projection lamp is placed on a desk orother supporting object, a projection direction of the projection lampis easy to adjust, which has fewer limitations. The projection lamp canbe remotely controlled by a remote controller, and the remote controllercan separately control turning ON and OFF of the light source board 121and the laser emitter 131 so as to project at least one of theprojection of stars or the projection of the nebula.

The aforementioned embodiments are merely some embodiments of thepresent disclosure, and the scope of the disclosure is not limitedthereto. Thus, it is intended that the present disclosure cover anymodifications and variations of the presently presented embodimentsprovided they are made without departing from the appended claims andthe specification of the present disclosure.

What is claimed is:
 1. A projection lamp for projecting a nebula and astarry sky, comprising: a housing, a light source assembly, a laserassembly, a rotating assembly, a control board, a base seat, and a powersource port, wherein: the light source assembly and the laser assemblyare disposed in the housing and penetrate through the housing, therotating assembly and the control board are disposed in the housing, therotating assembly is configured to drive a rotating optical sheet of thelight source assembly and a diffraction sheet to rotate, the base seatis fixedly disposed in the housing, the power source port is disposed onthe control board and penetrates through the housing, the light sourceassembly comprises a light source board, a light reflecting cup, a fixedoptical sheet, the rotating optical sheet, and a lens assembly, thelight source board is fixedly disposed in the housing, the light sourceboard, the light reflecting cup, the fixed optical sheet, the rotatingoptical sheet, and the lens assembly are successively disposed along apath in which light rays emitted by the light source board move, thefixed optical sheet is fixedly disposed on the base seat, the rotatingoptical sheet is rotatably connected to the rotating assembly, the lensassembly is fixedly disposed on the housing, the light reflecting cup isconfigured to reduce a lighting angle of the light rays emitted by thelight source board so as to enable the light rays emitted by the lightsource board to be projected onto the fixed optical sheet, the fixedoptical sheet and the rotating optical sheet are configured tosuccessively scatter the light rays emitted by the light source board soas to enable the light rays scattered by the rotating optical sheet tobe projected onto a projection plane to form a projection of the nebulathrough the lens assembly, and the rotating assembly is configured todrive the rotating optical sheet to rotate so as to make the projectionof the nebula flow.
 2. The projection lamp for projecting the nebula andthe starry sky according to claim 1, wherein: the housing comprises anupper housing and a lower housing, and the upper housing and the lowerhousing are connected to each other to define a chamber.
 3. Theprojection lamp for projecting the nebula and the starry sky accordingto claim 1, wherein: the fixed optical sheet and the rotating opticalsheet are frosted glass.
 4. The projection lamp for projecting thenebula and the starry sky according to claim 1, wherein: the laserassembly comprises a laser emitter and a heat sink, and the laseremitter is disposed in a through channel of the heat sink.
 5. Theprojection lamp for projecting the nebula and the starry sky accordingto claim 4, wherein: the rotating assembly comprises a motor, atransmission gear, a light source rotating gear, and a laser rotatinggear, the motor is fixedly disposed in the housing and comprises anoutput shaft operatively coupled to the transmission gear, thetransmission gear is operatively coupled to each of the light sourcerotating gear and the laser rotating gear, the rotating optical sheet isoperatively coupled to the light source rotating gear, the laserrotating gear comprises a hollow protruding column extending outwardalong an axis of the laser rotating gear, the diffraction sheet isdisposed on a distal end of the hollow protruding column, and a laserbeam emitted by the laser emitter is configured to pass through thehollow protruding column and the diffraction sheet so as to form amoving projection of stars.
 6. The projection lamp for projecting thenebula and the starry sky according to claim 5, wherein: the base seatcomprises two supporting columns for supporting the hollow protrudingcolumn, and each of the two supporting columns comprises an arc groovematched with an outer wall of the hollow protruding column.
 7. Theprojection lamp for projecting the nebula and the starry sky accordingto claim 1, wherein: the control board comprises a wirelesscommunication module configured to be connected to a remote controller.8. The projection lamp for projecting the nebula and the starry skyaccording to claim 2, wherein: the lens assembly is fastened between theupper housing and the lower housing.
 9. The projection lamp forprojecting the nebula and the starry sky according to claim 8, wherein:the lens assembly comprises a lens lower lid, a lens upper lid, aplastic sheet, and a lens, the lens is fixedly disposed between the lenslower lid and the lens upper lid, and the plastic sheet is fixedlydisposed on the lens upper lid in a hot melt manner.
 10. The projectionlamp for projecting the nebula and the starry sky according to claim 1,wherein: the base seat comprises a plurality of slots for fixing thelight source board and the fixed optical sheet.